H04L 49/00
Packet switching elements
H04L49/00 (Packet switching elements) appears on 21,323 US grants and 18,665 published applications in this corpus.
Search patents in H04L- Granted patents
- 21,323
- Published applications
- 18,665
- Assignees
- 3,030
- Inventors
- 28,850
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1980 | 2 | 0 |
| 1981 | 3 | 0 |
| 1982 | 2 | 0 |
| 1983 | 1 | 0 |
| 1984 | 8 | 0 |
| 1985 | 14 | 0 |
| 1986 | 13 | 0 |
| 1987 | 16 | 0 |
| 1988 | 14 | 0 |
| 1989 | 31 | 0 |
| 1990 | 50 | 0 |
| 1991 | 37 | 0 |
| 1992 | 62 | 0 |
| 1993 | 87 | 0 |
| 1994 | 137 | 0 |
| 1995 | 173 | 0 |
| 1996 | 230 | 0 |
| 1997 | 181 | 0 |
| 1998 | 304 | 0 |
| 1999 | 349 | 0 |
| 2000 | 440 | 0 |
| 2001 | 360 | 124 |
| 2002 | 402 | 579 |
| 2003 | 455 | 689 |
| 2004 | 516 | 622 |
| 2005 | 464 | 702 |
| 2006 | 664 | 712 |
| 2007 | 520 | 615 |
| 2008 | 582 | 566 |
| 2009 | 653 | 575 |
| 2010 | 813 | 551 |
| 2011 | 680 | 582 |
| 2012 | 603 | 673 |
| 2013 | 723 | 835 |
| 2014 | 946 | 1046 |
| 2015 | 1044 | 1132 |
| 2016 | 1127 | 1028 |
| 2017 | 1108 | 1082 |
| 2018 | 1018 | 988 |
| 2019 | 1191 | 1006 |
| 2020 | 1126 | 1092 |
| 2021 | 1021 | 872 |
| 2022 | 925 | 772 |
| 2023 | 799 | 605 |
| 2024 | 641 | 506 |
| 2025 | 516 | 402 |
| 2026 | 272 | 309 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- H04L 49/90Buffering arrangements5,694
- H04L 49/30Peripheral units5,675
- H04L 49/25Routing or path finding in a switch fabric4,747
- H04L 49/35Switches specially adapted for specific applications4,747
- H04L 49/10Packet switching elements: characterised by the switching fabric construction3,515
- H04L 49/15Interconnection of switching modules2,822
- H04L 49/20Support for services2,616
- H04L 49/70Virtual switches1,988
All 14 subgroupsShow fewer
- H04L 49/55Prevention, detection or correction of errors1,962
- H04L 49/50Overload detection or protection within a single switching element1,256
- H04L 49/60Software-defined switches1,049
- H04L 49/40Constructional details761
- H04L 49/45Arrangements for providing or supporting expansion459
- H04L 49/65Re-configuration of fast packet switches309
Recent patents
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- Hierarchical mapping for network on chip6 Oct 2026US 12,756,675 B2Baya Systems, Inc.
- Cache allocation system6 Oct 2026US 12,756,676 B2Intel Corporation
- Opportunistic content delivery using delta coding8 Oct 2026US 2026/0312676 A1ViaSat, Inc.
- API for Multi-NIC Load Balancing8 Oct 2026US 2026/0312906 A1Mellanox Technologies, Ltd.
- Flow control-based computing system and method for switching connections between computing resources8 Oct 2026US 2026/0312914 A1Electronics and Telecommunications Research Institute
- Hierarchical network design for dynamic dataflow architectures8 Oct 2026US 2026/0312921 A1National University of Singapore
- Buffering packets to manage time delays in a bonded data connection8 Oct 2026US 2026/0312922 A1Connectify, Inc.
Most cited
By later US patents
- System and method for voice transmission over network protocols2,175US 6,621,834 B1Raindance Communications, Inc. · 2003
- Distributed memory switching hub1,538US 6,175,571 B1Network Peripherals, Inc. · 2001
- System and method for systolic array sorting of information segments1,364US 6,879,596 B1Applied Micro Circuits Corporation · 2005
- Method and system for directing a flow between a client and a server1,118US 6,006,264 AArrowpoint Communications, Inc. · 1999
- System, method, and computer program product for improving memory systems1,021US 9,432,298 B1P4Tents1, LLC · 2016